private static void Process(BlockGrid grid)
{
//var pres = grid.CalcPressure();
//pres.Render();
var water = grid.FindWater();
water.AddRange(grid.Find(BlockType.WaterSource));
var moveTo = new SortedList <int, Position>(new DuplicateKeyComparer <int>());
foreach (var w in water)
{
if (grid [w.X + 1, w.Y] == BlockType.Air)
{
moveTo.Add(w.Y, new Position(w.X + 1, w.Y));
}
if (grid [w.X, w.Y + 1] == BlockType.Air)
{
moveTo.Add(w.Y + 1, new Position(w.X, w.Y + 1));
}
if (grid [w.X - 1, w.Y] == BlockType.Air)
{
moveTo.Add(w.Y, new Position(w.X - 1, w.Y));
}
if (grid [w.X, w.Y - 1] == BlockType.Air)
{
moveTo.Add(w.Y - 1, new Position(w.X, w.Y - 1));
}
}
var newBlock = moveTo.Values[0];
BlockType newBlockType = BlockType.Water;
if (grid[newBlock.X, newBlock.Y - 1] == BlockType.Air)
{
newBlockType = BlockType.FallingWater;
}
grid.SetBlock(newBlock, newBlockType);
// Convert falling water to water
foreach (var w in grid.Find(BlockType.FallingWater))
{
if (grid[w.X + 1, w.Y] == BlockType.Water || grid[w.X - 1, w.Y] == BlockType.Water)
{
grid[w.X, w.Y] = BlockType.Water;
}
}
/*
* foreach (var s in grid.Find(BlockType.WaterSource))
* {
* var stream = grid.FindStream(s);
* var p = new List<Coord>();
* foreach(var c in stream)
* {
* if (pres[c.X, c.Y] == 0)
* {
* // Falling
* if (grid[c.X, c.Y - 1] == BlockType.Air)
* p.Add(new Coord(c.X, c.Y - 1));
* else if (grid[c.X + 1, c.Y - 1] == BlockType.Air)
* p.Add(new Coord(c.X + 1, c.Y - 1));
* else if (grid[c.X - 1, c.Y - 1] == BlockType.Air)
* p.Add(new Coord(c.X - 1, c.Y - 1));
* }
* else if (pres[c.X,c.Y] < 0)
* {
* // Up
* if (grid[c.X, c.Y + 1] == BlockType.Air)
* p.Add(new Coord(c.X, c.Y + 1));
* else if (grid[c.X + 1, c.Y + 1] == BlockType.Air)
* p.Add(new Coord(c.X + 1, c.Y + 1));
* else if (grid[c.X - 1, c.Y + 1] == BlockType.Air)
* p.Add(new Coord(c.X - 1, c.Y + 1));
* }
* else
* {
* // Sideways
* if (grid[c.X + 1, c.Y] == BlockType.Air)
* p.Add(new Coord(c.X + 1, c.Y));
* else if (grid[c.X - 1, c.Y] == BlockType.Air)
* p.Add(new Coord(c.X - 1, c.Y));
* }
* }
* grid.SetBlock(p[0], BlockType.Water);
* }
*/
//var water = grid.FindNeighbours(BlockType.Water);
//water.AddRange(grid.FindNeighbours(BlockType.FallingWater));
//foreach (var s in water)
//{
// if (grid[s.X,s.Y-1] == BlockType.Dirt)
// {
// grid[s.X, s.Y] = BlockType.Water;
// }
// if (grid[s.X, s.Y - 1] == BlockType.Air)
// {
// grid[s.X, s.Y-1] = BlockType.FallingWater;
// }
//}
//foreach (var s in grid.Find(BlockType.Water))
//{
// if (grid[s.X,s.Y-1] == BlockType.Air)
// {
// grid[s.X, s.Y] = BlockType.FallingWater;
// }
// else if (grid[s.X+1,s.Y-1] == BlockType.Air)
// {
// grid[s.X, s.Y] = BlockType.Air;
// grid[s.X + 1, s.Y - 1] = BlockType.Water;
// }
// else if (grid[s.X-1,s.Y-1] == BlockType.Air)
// {
// grid[s.X, s.Y] = BlockType.Air;
// grid[s.X - 1, s.Y - 1] = BlockType.Water;
// }
//}
//foreach (var s in grid.Find(BlockType.Water))
//{
// if (grid[s.X, s.Y - 1] == BlockType.Air)
// {
// grid[s.X, s.Y - 1] = BlockType.FallingWater;
// grid[s.X, s.Y] = BlockType.Air;
// }
//}
}
